作者postpetharri (Harrison)
看板TransBioChem
标题Re: [化学] 金榜题库分章详解 第十四章 配位化学
时间Mon Apr 28 23:27:32 2008
※ 引述《postpetharri (postpet)》之铭言:
: P.14-10
: 试题19 : Will the five d orbitals remain degenerate under an octahedral field?
: 疑问:那个degenerate是什麽意思呢?看详解也不晓得它要表达甚麽意思?
: P.14-29
: 13. Which of the following groups of ions is classified as hard acid?
: (A) F- Cu+
: (B) Br- H-
: (C) H+ Na+
: (D) SCN- H2O
: 正解: C
: 疑问:请问hard acid 是甚麽意思? 为什麽答案是c? 谢谢解答
不好意思 还有一题
P.14-30
15. Charge-transfer transitions are generally intense compared with
ligand-field transitions. So, the color of the pigment "cadmium yellow,
CdS" is due to the transition
(A) Cd2+(5s)←S2-(π)
(B) Cd2+(4d)←S2-(π)
(C) Cd2+(5s)←S2-(5π)
(D) Cd2+(4d)←S2-(π)
疑问:题目没有打错,它的B D选项是相同的,但是除了这个以外,我知道二价镉在
错合物中是4d,关於S2-就不了解它为什麽用π表示了 谢谢解答
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